Mutant Strength

If superhero movies have taught people anything, it's that little changes to radiation, superserum, and genetic abnormalities may transform anyone into a superhuman. The craziest aspect is that evidently that's true, at least to some level. Mutant power exists. Everything that has muscle tissue also has a protein called myostatin in it. This protein actually inhibits muscle growth. Its purpose is to create a balance in the way your muscle tissue is formed. But if you have less myostatin, then you will naturally develop more muscle. If you have a mutated gene responsible for the production of myostatin, then things get out of hand.

This mutation was discovered in humans for the first time in 2004. It has previously been reported in some particularly muscular animals, but it was discovered in a German infant in 2004. The end result was a child with incredible muscle growth and strength. There is some optimism that one day strength-building medications that suppress myostatin will be developed, but for the time being, it is just an extremely unusual mutation that causes certain people to Hulk out.